McDonald's has lost thousands of customer details to a hacker, including names, phone numbers and street and e-mail addresses. The fast food chain is also warning of pending phishing scams.
The customer details were lost after a hacker broke into the fast-food restaurant's U.S. marketing partner and stole the details provided by customers who sign up for promotions.

McDonald's was concerned that the hacker might use the details to conduct phishing scams. Phishing scams are fraudulent email campaigns run by criminals to steal financial and identity information, or infect users computers with malware.

"In the event that you are contacted by someone claiming to be from McDonald's asking for personal or financial information, do not respond and instead immediately contact us... McDonald's would not ask for that type of information online or through e-mail," the company wrote on its website.

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